Collector Buttons were released in every DC Universe Classics single beginning with Wave 12. From Wave 12 to 15, each button had the DC75 logo stamped onto the back of every button, with the face showing character art. The DC Universe Infinite Heroes figures that were released at the same time also featured buttons.
This gallery is yet incomplete, if you have any images you'd like to donate, please click the empty box for the button to begin upload.